Kieran Duffy
- Full Name: Kieran Duffy
- Born: c.2339; Earth (SCE Short Story: "Interphase Book 2", "Wildfire, Book 2")
- Entered Academy at age 18 per "Wildfire, Book 2"; year per "Here There Be Monsters" as described below
- Species: Human
- Gender: Male
- Father: NFN Duffy
- Mother: Christa Duffy
- Sister: Amy Duffy
- Experienced at some point with protomatter-based systems (SCE Short Story: "Wildfire, Book 1")
- c.2357: Cadet, Starfleet Academy (SCE Short Story: "Here There Be Monsters")
- c.2361: Captain, 3D polo team (SCE Short Story: "Here There Be Monsters")
- Senior year, "fifteen years ago" as of May 2376 per text
- c.2361: Captain, 3D polo team (SCE Short Story: "Here There Be Monsters")
- By 2366: Lieutenant junior grade, engineering officer, Starfleet; USS Enterprise (TNG: "Hollow Pursuits")
- By 2375: Lieutenant commander, second officer, Starfleet; USS da Vinci (SCE)
- Propulsion specialist (SCE Short Story: "Wildfire, Book 2")
- Death: September 26, 2376; USS da Vinci (SCE Short Story: "Wildfire, Book 2")
- Late 2376: Posthumously awarded Starfleet Citation for Conspicuous Gallantry for actions defending the Ovanim from extinction following the accidental activation of the Wildfire device within Galvan VI (SCE Short Story: "Wildfire, Book 2")